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author = "Isselstein, Johannes"
1

Found 4 documents, displaying page 1 of 1

Nitrogen management in organic farming: comparison of crop rotation residual effects on yields, N leaching and soil conditions

Author(s) : Kayser, Manfred , Müller, Jürgen , Isselstein, Johannes
Description : After 3 years of different crop rotations in an organic farming experiment on a sandy soil in northwest Germany, spring triticale was cultivated on all plots in the fourth year to investigate residual effects on yield, nitrogen (N) leaching and nutrient status in the soil. Previous crop rotations di...
Repository : GoeScholar (Publikationenserver der Georg-August-Universität Göttingen)
Language(s) : English

Isotopic composition of soil, vegetation or cattle hair no suitable indicator of nitrogen balances in permanent pasture

Author(s) : Wrage, Nicole , Küchenmeister, Frank , Isselstein, Johannes
Description : Stable isotope signatures of cattle tail switch hair or meadow vegetation have been found to be related to nitrogen (N) surpluses of whole farms and of meadows, respectively. Permanent pastures are more patchy in terms of nutrient inputs and outputs and N balances for the whole plot do not necessari...
Repository : GoeScholar (Publikationenserver der Georg-August-Universität Göttingen)
Language(s) : English

Little fertilizer response but high N loss risk of maize on a productive organic-sandy soil

Author(s) : Kayser, Manfred , Benke, Matthias , Isselstein, Johannes
Description : Information on the environmental impact of maize production is actually inconsistent. Indeed some experiments report good nitrogen (N) efficiencies and small residual N. Other experiments show large leaching losses, while in practice maize production is often coupled with an intensive production and...
Repository : GoeScholar (Publikationenserver der Georg-August-Universität Göttingen)
Language(s) : English

Der Kommissionsvorschlag zur GAP-Reform 2013: Aus Sicht von Göttinger und Witzenhäuser Agrarwissenschaftler(inne)n

Author(s) : Lakner, Sebastian , Brümmer, Bernhard , von Cramon-Taubadel, Stephan , Heß, Jürgen , Isselstein, Johannes , Liebe, Ulf
Description : Es hat in der Gemeinsamen Agrarpolitik der Europäischen Union (GAP) seit 1992 zahlreiche mehr oder weniger erfolgreiche Reformschritte gegeben, die die gemeinsame Agrarpolitik generell liberalisiert, ihre Budget-Kosten reduziert und die handels- und produktionsverzerrenden Wirkungen abgebaut haben. ...
Repository : EconStor
Language(s) : German
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Found 4 documents, displaying page 1 of 1